feat: bold markup; echo usage for default mail script

functions.sh

@@ -1,5 +1,8 @@
 # NOTE: config should be loaded by the script using this shared functions.sh
 
+bold=$(tput bold)
+dlob=$(tput sgr0)
+
 # Sync notes via git
 notesSync() {
   # check if online

mail.sh

@@ -14,5 +14,5 @@ if [ "$1" = "task" ] || [ "$1" = "t" ]; then
   read -p "Task:" task
   mutt -s "$task" things
 else
-  mutt $1 $2 $3 $4 $5
+  echo "Use ${bold}mail task${dlob} or ${bold}mt${dlob} to send a task to Things. Otherwise, use ${bold}mutt${dlob} for mail"
 fi